Stopper



2 SHEETS-SHEET 2.

Patented Aug. 30, 1921.

L11 -II M. aovmn. STOPPER.

APPLICATION FILED DEC-20,1919.

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warren STATES rArENT OFFICE.

MIGHAEL IPROVIQH, OF CHICAGO, ILLINOIS.-

s'rorrnn.

I Specification of Letters Patent. Patent d 30 1 2 Application filedDecember 20, 1919. Serial No. 346,260.

,a gas main, as'in the'case of repairs or extensions to the pipe lines;.and my primary object is to provide a novel, simple and economicalconstruction of device for this purpose which may 'be quicl'rly andeffectively applied to use, and by the use otwhich inconvenience anddanger to the workman from escaping gas may be greatly reduced. Y

Reterrmg to the accompanying drawings :Figure 1 is a face viewin-elevation of a device embodylng my invention, the device being shownin a gas main intheposi tion it occupies when performing 1ts tunetion asa stopper, the section being-taken at the line 1 onFig. 2 and viewed inthe direction of the arrow. 2 is an edge view of the device showing thepipe 't'o which it is applied in longitudinal section. 3 is a view likeFig. 1 of the device, showing it by full lines in the position its partsassume prior to its application to stopper-forming position, andbydotted lines thepositions or its parts when positioned'in a'pipe asshown 1 in Fig. 1. Fig. 4e 'isa'section taken at the line 1- 1 on'F1g.'1and viewed in the direction of the arrow. Fig. 5 is-a section taken atthe line 5-5 onFig. 1' and viewed ln'the direction of the arrow; andFig. 6, a section taken at the line '6-6 on Fig. 1- and viewed.

in the direction of the arrow.

In accordance with the preferred, illustrated, embodiment of myinvention the 'de vice is formed of a frame 7 comprising the generallyparallel side members "8 8" 'ter'mediate. the upper and lowerends of theframe 22 and extending at its ends into united at their upper ends bythe crossepiece 9 containing centrallydisposed, screw threaded opening9, and the'laterally opening slots 10 and 11 at opposite" sides of theopening referred to, and a ring 12 externally screw-threadedasrepresented and having upwardly-extending, diametricallyopposed lugs18 connectedwith the lower ends of the frame sides 8 1n overlappedrelation, as by the screws 14, one of the frame sides 8 being providedwith a screw 15 screwing therein for a purpose hereinafter ex plained.The frame thus provided is equipped at its lower end with a diaphragm 16shown as, and by preference,-in the form' ofa bag formed ofopposed-sections 17 of flexible material, as tor example fabric such asclose-grained duck, having their edges connected, and bound by, a rubberstrip, 18,

the fabric and rubber strip being secured together in any suitable way,as for example by sewing them together or vulcanizing them into anintegral structure. The upper,.open, end ofthe bag, thisend'beingrestricted as shown, is held by a tightjoint to the threadedring 12, as by clamping it thereto by means of an expansible, segmental,ring 19,

as ofwire, between which and the inner surface or the ring 12, the wallof the open;

mouth of the bag extends, the ring 19 op-z' posing annular grooves 20in'th'e outer surfaces of arc-shaped members'21 located in the frame andpressed against the bag, and

held in place,'by the screws 14, thereby pro-. viding means whereby thebag 16 iS remQ ably yet firmly held in place on the frameT. One of themembers21 is secured to the ring 19 midway between the ends ofthe'latter,

and the other engages the ends of the wire torming this ring.

The device further comprises a member" adapted to be operatedto forcethebag 16 into tight-jointdorming position in thepipe T 90 to be closed,this member being preferably formed of aframe 22 comprising thegenenally parallel, longitudinally extending, bars 23 connected at theirlower ends by a cross pin 24 and at their upper ends by acrosspiece 25formed integrally itherewith,the

bars 23 at the upperend of the frame 22 being spaced apart a distancesubstantially equal to the distance between the two slots 10 and11,'adapting the'frame 22 to be assembled withthe frame 7, ashereinafter described. The'bars 28 carry a cross-pin 26,

shown in the form of a bolt, located inslots 27 in the frame bars 23,this crossdirection lengthwise" of the .frame 22. Pivotally connectedwith the pin 26 are links 28 which extend therefrom in oppositedirections, these links, which are preferably pin being slidable inthese slots in .a"

of general arc-shape, preferably having sleeve sections 29 whichsurround the pin 26 and by which the pivotal connection therewith isafforded. The links 28 cooperate with members 30 for cotiperation withthe diaphragm 16 for forcing the latter into tigl1t-joint-formingcondition relative to the inner surface of the pipe with which thedevice is to be used.- The members 30 which, in the particularconstruction illustrated, operate to cause the diaphragm to assume theposition stated, upon operating them to spread condition within the bag16, are preferably formed of comparatively springy wire, each being atone end of general semicircular shape as shown at 31, and at itsopposite end of reversely curred form as shown at The members 30 arepivoted at eyes 33 to the cross-pin 24 at the lower ends of theirportions 31, and at eyes 34 at their opposite ends to the pins 35carried at the outer ends of the links 28, the members 30 beingreversely positioned as shown wherebywhen the links 23 are in theposition shown by full lines in Fig. 3, the frame like structure formedby the members 30 is in very compact and contracted condition, adaptingof the insertion of the structure of which these members are parts, intoand through, the ring 12 and into the bag 16 through the mouth portionthereof, and when the links 28 are in the position represented bydottedlines in Fig. 3, the members 30 are in the expanded position shownby dotted lines in Fig. 3 wherein th frame-like structure formed of themembers 30 assumes an approximately circular form.

The frame 22 has journaled in its crosspiece 25 a threaded rod 36extending lengthwise of this frame and provided at its outer, upper, endwith a circular hand-wheel 37 by which to rotate the rods 36 and ashoulder portion 38 bearing against the top of the cross piece 25, thelower end of this rod being adapted to screw into the threaded opening 9in the cross-piece 9, the rod 36 which is provided with anut 39 toprevent it from becoming disconnected from the frame 22, being providedfor a purpose hereinafter explained.

One of the links 28 is provided with a screw-threaded rod 40 j ournaledin a slot 28 therein to extend crosswise thereof, the threaded rod 40having collar sections 41 spaced apart and arranged at opposite sides ofthe link through which this rod extends,- to permit the rod 40 to berotated on this link but prevent it from becoming discon-- nectedtherefrom, the outer end of this rod having a hand-wheel 42 by which itmay be rotated. The opposite, threaded, end of the rod 40 is adapted toscrew into a threaded opening 43in the other link 28, the device justdescribed operating as a means for forcibly drawing the links 28together when this device is positioned as shown in Fig. l. 1

as indicated at 45 to provide the screwthreaded opening therein shown.He then introduces the bag-diaphragm 16 in'crum- .pled condition intoand through the tap opening 45 and into the interior of the pipe 44,thereupon screwing the ring 12 into this tap-hole to the position shownin the drawings, wherein the bag 1.6.extends crosswise of the pipe 44.In accordance with the preferred manner of using the device, theoperator, assuming the structure formed of the frame'22, links 28 andthe expanding members 30, to be disconnected'from the frame 7, adjuststhe links 28, the rod 40 being disconnected at its threaded extremityfrom theadjacent link'28, the one at the left-hand side of Fig. l, tocause these links to assume the outwardly spread position, and themembers 30 the contracted position shown by full lines in Fig. 3, thepivot-pin 26 in this operation sliding downwardly in the slots 27. WViththis part of the structure thus positioned, the operator introduces itat its lower end into and through the ring 12, and thereupon swings thelinks 28 toward each other with the result of causing these links torise and the portions 31 of the members 30 to move outwardly. Thestructure thus introduced into the ring 12 is then bodily swung to aposition in which the upper ends of its bars 23 extend into the slots 10and 11 of the frame 7 as shown, and the operator continues to swingthelinks 28 toward each other to a position in which the,

outer threaded end of'the-rod 40 may be screwed into the opening 43. Thethreaded rod 36 is then screwed into the threaded opening 9 andtightened up to cause the frame 22 to be forced at its lower end againstthe bottom of the diaphragm to insure a tight joint between the latterand thepipe at this point. The operator then tightens the adjustingdevice formed of the rod 40 to forcibly squeeze the links 28 togetherwith the result of causing the members 30 at their portions 31 to beforced against the inner surface of the bag for effecting a tight jointbetween the latter and.

the inner surface of the pipe 44.

In this connection it may be stated that by reason of the fact that themembers 30 are constructed and associated with the other operatingelements as shown, a tight joint between the diaphragm and the innersurface of the pipe 44 will be produced regardless of slight'unevennesses in the pipe, or variations in the internal diameters ofthe pipes with which the device is to be used within certain limits,itbeing noted that in the preferred construction illustrated themembers. 30 are disposed at their upper ends in intersecting relationand thusextendat relatively wide angles with relation to the axis of thering 12,,and that'the force applied to these members isat thesides ofthe frame 22 opposite that atwh-ich; the portions of the members 30engaging ,thebag extend;

.After the threaded rod '36 has been screwed down to the positionstated, theop erator, to insure against the" twisting of the frame 22,tightens the screw-l5 againstthe side of this frame. The structure, ofwhich the frame 22 forms a part, maybe readily removed from thejexpanded position described,--by unloosening the screws'15, 36 and 4:0and swinging the'links 28 outwardly in opposite directions to contractthe framelike structure presented by the lower curved portions 31 of themembers 80. v

It will be noted that as-soon as the plug 12 is screwed into thetap-hole of the'pipe, the'escape of gastherefrom is, prevented, theplugging of this opening againstthe escape of gas not beingdependentupon the operation of the portion ofthe apparatus which forces thediaphragm 16 into tight engagement with the walls of the pipe, or

the employmentof anysealing material such as mud or the like which isnow commonly used by workmen when a gas mainis to berepaired orconnections made therewith.

The work of makingrepairs on, and connections with, gas mains maybegreatly ex pedited and accomplishedwith the minimum inconvenience ordanger to the workman by employing stopper means according to myinvention, and where desired a number of the diaphragm-equipped plugsmay be positioned .in the pipe, thus closing the tap-. holes and thediaphragm-spreading means being applied to position therein as desired,

I andavoiding danger of the gas escaping after theplugs are inplace.

lVhile I haveillustrated'and described a' particular constructionembodying my invention, I do .not wish to be understood as intending tolimit it thereto'asthe same may be variously modified and alteredwithout departing from the spirit of my invention, it being my intentionto as fully and completely as the art will permit. V 1

WVhat I claim as new and desire to secure by Letters Patentii's:

1. A levice for prising, in combinatioina bag-diaphragm containing anopening and equipped at its the prior state of open end with a hollowmember adapted to be secured in the tap-hole of a pipe, and

means for causing said bag to be forced into tight-joint-formingcondition relative to the inner wall of the p1pe.-

2 A-Vdevice for the purpose set forth, comprising, in combination, abag-d1aphragm containing an opening and equipped at its" claim myinvention the purpose-set forth, comopen portion with a hollow,externallythreaded member adapted to be screwed into 'thetap-hole of apipe, and means for causing said bag to'be forced intotight-jointforming condition relative to the inner wall prising, incombination, a bag-diaphragm 7 containing an opening and equipped at itsopen end with ahollow member adapted to be secured in'the tap-hole of apipe, and

means adapted to be introduced into said bag through said hollow memberfor caus ingsaid bag to be forced into tight-jointforming conditionrelative to the inner wall ofthe pipe.

5. A- device for the purpose set forth, comprising 'in' combination, abag-diaphragm containing an opening andequipped at its openportion'witha hollow member adapted to be. secured in the-itap'hole of apipe, andexpansible meansin said bag for causing'the latter to "be forced intotight-j oint-forming condition relative to the inner wall of 'the mp6, V

' 6. A device for the purpose set forth, comprising, incombination, a'diaphragm, a

member to whioh said diaphragm is connected andadaptedto besecured inthe tap-hole of a pipe,'a second member adapted to ensite said taphole,to make a tight joint, and

meanson saidsecond member for forcing said diaphragm intot1ghtomt-form1ng condition relative tothe wall of the pipe.

7. A device for the purpose set fortln'comprising, in combination,'adiaphragm, a

member to which said diaphragm-is'connected and adapted' to be securedinthe tap hole of a pipe, a secondmember adapted to engage thelowerportlon of said diaphragm and movable relative to said first-namedmember, a's'crew device on one of said mem-' bers and'engaging the otherthereof and operating'to force said second member inwardly against theportion of said diaphragm at the {side thereof opposite said tap-hole,to make a tight joint, and means on said second member forforcing saiddiaphragm into tight-joint-forming conditionrelative'to the wall of thepipe.

8. A device for the purpose set forth, comprising, in combination, abag-diaphragm,a hollow member to which said bag-diaphragm is connectedand into which it opens, said hollow member being adapted to be securedin the tap-hole of a pipe, a second member extending through said hollowmember and into said bag. and adapted 'to engage the lower portion ofsaid bag and movable relative to said first-named member, means on oneof said members and engaging the other thereof for forcing said secondmember inwardly against the portion of said diaphragm at the sidethereof opposite said tap-hole, to make a tight joint, and means on saidsecond member for forcing said diaphragm into tight-joint-formingcondition relative to the wall of the pipe.

9. A device for the purpose set forth, comprising, in combination, astructure formed of a flexible diaphragm and a hollow member connectedtherewith and adapted to be secured in a tap-hole of a pipe, and asecond structure disconnected from said first-referred-to structure,adapted to be inserted into said member and operable to force saiddiaphragm into tight-joint-forming condition relative to the innersurface of the pipe.

10. A device for the purpose set forth, comprising, in combination, a 1structure formed of a flexible diaphragm and a hollow memberconnectedtherewith and adaptedto be secured in a tap-hole of-a pipe, a secondstructure disconnected from said first-referred-to structure, adapted tobeinserted into said member and operable to force said diaphragm intotight-joint-forming condition relative to the inner surface of the pipe,and means releasably connecting said structures together.

11. A device for the purpose set forth, comprising, in combination, a astructure formed of a flexible diaphragm and a hollow member connectedtherewith and adapted to be secured in a tap-hole of a pipe, a secondstructure separate from said first-referred-to structure, adapted to be.inserted into sald member and operable .to force said dia-;

phragm into tight-joint-forming condition relative to the inner surfaceof the pipe, and means operating upon assembling said structurestogether to force said second structure inwardly against the portion ofthe pipe opposite the tap-hole therein.

12. A device for the purpose set forth, comprising, in combination, astructure formed of a flexible bag-diaphragm and a hollow memberconnected with, and opening into, said bag-diaphragm and adapted tobesecured in a tap-hole of a pipe, and a second structure, disconnectedfrom said first-referred-to structure, adapted to be inserted into saidmember and b'agediaphragm and operable to force said diaphragm intotight j oint-forming condition relative to the inner surface of thepipe. I

13. A device for the purpose set forth, comprising, in combination, astructure formed of a flexible bag-diaphragm and a hollow memberconnected with, and opening into, said bag-diaphragm and adapted to besecured in a tap-hole of a pipe,- a second structure, disconnected fromsaid first-re ferred-to structure, adapted to be inserted into saidmember and bag-diaphragm and operable to force saiddiaphragm 'intotightjoint-forming condition relative to the inner surface of the pipe,and means releasably connecting said structures together.

14:. A device for thefpurpose set forth, comprising, in combination, astructure formed of a flexible bag-dia hollow member. connected wit andopening into, said bag-diaphragm and adapted to be secured in a tap-holeof a pipe, a second structure, separate from said first-referred-tostructure, adapted to be inserted into said member and bag-diaphragm andoperable to force said diaphragm intotight-joint-forming conditionrelative to the inner surface of the pipe, andmeans operating uponassembling said structures together to force said second structureinwardly against the portion of the pipe opposite the tap-hole therein.

- 15. A device for the purpose set forth,

comprising, in combination, a structure formed of a diaphragm adapted tobe introduced into a pipe through a tap-hole therein and a hollow memberwith which said diapliragm is connected and adapted to be secured in thetap-hole, said structure being constructed and arranged to preventescape of gas from the pipe through said tap-hole, and means extendingthrough said member for forcing said diaphragm into tight-jointformingcondition relative to the inner surface of the pipe.

' '16. A device for the comprising, in combination, a structure formedof a bag-diaphragm adapted to be introduced into a pipe through atap-hole therein and a hollow member with which said bag-diaphragmisconnected and into which it opens, said hollow member being adapted tobe secured in the tap-hole and said structure being constructed andarranged to prevent escape-of gas from the pipe through said tap-hole,and means extending through said member and into said bag-diaphragm forforcing the latter into tight-jointformingcondition relative to theinner surface of the pipe.

, 17. In a device for the purpose set forth, the combination of adiaphragm adapted to be introduced into a pipe through a tap-holetherein, and=-means for forcing the diaphragm into engagement with theinner surface of the pipe formed of a member adapted to enter the pipethrough the taphole, a pluralityof curved members each flexiblyconnectedatone end with the inner hragm and a I purpose set forth,

I operatively 'oted to said'member and end of said member, with theircurvedlportions, for operatively engaging said phragm, extendingoutwardly in opposite directions from said member, and'links pivwith theother ends of said curved members for the purpose set forth.

18. In adevice for the'purpose set forth,

the combination of a diaphragm adapted to be introduced intoa pipethrough atap-hole therein, and means for forcing the diaphragm intoengagement with the innersurface of the pipe formed of a member adaptedto enter'the pipe through the taphole, a plurality of curved memberseach flexibly connected at one end with the inner end of said member,with their curved portions, for operatively engaging said diaphragm,extending outwardly in opposite directions from said member, linkspivoted to saidmember and flexibly connected with the other ends of saidcurved members for the purpose set forth, and means engaging said linksfor moving ,them relative to each other. J

19. In a device for the purpose set forth, the combination of adiaphragm adapted'to be introduced into a pipe through a tap holetherein, and means for forcing the diaphragm into engagement with theinner surface of the pipe formed of a member-adapt ed to enter the pipethrough the tap-hole, a plurality'of curved members eachfiexiblyconnected at one end with the inner end of said member, with theircurved portions, for operatively engaging said diaphragm, extendingoutwardly "n opposite directions from said'member,

and "links pivoted to said member by a slidingplvotand flexibly connected with the other ends of said curved members.

20. In a device for thejpur-pose setforth, the combination of adiaphragm adaptedto be introducedinto a pipe therein, and means" forforcing the dia phragm into engagement with the'inner sur face of thepipe formedofj'a member adapt ed to enter the plpe-through thetap hole,

plurality of curvedmembers each flexibly connected at one end with theinner-endof said member, with their curvedportions, for engaging saiddiaphragm, ex tending outwardly in opposite directions from said member,links pivoted to said member by a sliding 1vot and flexibly'con nectedwith the other ends of said curved members, andmeans' engaging saidlinks for moving them relative to each other.

21. In adevicefor the purpose set forth, the-combination of a beintroducedintoa pipe through a tap-hole therein, and means for phragminto engagement with the inner fsurface'offthe pipe formed of a memberadapted to enterthepipe through the tap-hole, a

dia-

flexibly connected pipe through through a tap-hole diaphragm'adapted toforcing the dia plurality of curved spring members" each flexiblyconnected at oneend'with the inner end of said member, with their curvedpor-- tions,-for operatively engaging said diaphragm, extendingoutwardly in opposite directions from saidmemben'and links piv otedtosaid'member and flexibly connected with the other ends of said curvedmembers forthepurpose set forth.

22. I'n-a device for the purpose set forth, the combination of adiaphragm adapted to' be introduced into a pipe through atap-holetherein, and means for forcing the -diaphragm into engagementwith theinner surface of the pipe formed of a member ada'ptedito enter the pipethroughthetapa hole, a plurality of curved/members each pivotallyconnected at. one end'with the in be introduced into a pipe through atap-hole for. forcing the" diatherein, and means phragm into engagementwith the inner surfaceof the pipe for-med of a lorigitudi nally slottedmember adapted to enter the the tap-hole,

a plurality of curved members each flexibly connected at I one end withthe inner end of'said member with their curved portions, for'operatively engaging said diaphragm, extending out-" wardly in oppositedirections from said member, links flexibly connected with the otherends of said curved members, anda pivot device connected with theother'ends of said links and 'slidable in the slotted portion of saidmember.- f

2L In a device for the purposeset forth, the combination of abag-diaphragm adapted to be introduced intoa pipe through a tap-holetherein, and means extending into said bag-diaphragm for forcing "thelatter into engagement with the inner surface of the pipe formed'of amember adapted to enter "said diaphragm through the tap-hole,a plued tobe introducedinto apipe through a Y tap -hole therein,

and means extending into said bag-diaphragm for forcing the'latterintofengag'ement withthe' inner surface of the pipe formed of a memberadapted to enter said diaphragm through the tap-hole,

a plurality-of curved members each flexibly connected at one end withthe inner end of said member with their curved portions, for operativelyengagingsaid diaphragm, extending outwardly in from said member, linkspivoted to said member and flexibly connected with the other ends ofsaid curved members, and means engaging said links for moving themrelative to each other.

26. In a device for the purpose set forth, the combination of abag-diaphragm adapts ed to be introduced into a pipe through a tap-holetherein, and means extending into said bag-diaphragm for forcing thelatter into engagement with the inner surface of the pipe formed of amember adapted to enter said diaphragm through the tap-hole, a pluralityof curved members each flexibly connected at one end with the inner endof said member with their curved portions, for operatively engaging saiddiaphragm, extending outwardly in opposite directions from said member,and links pivoted to said member by a sliding pivot and flexiblyconnected with the other ends of said curved members. 7 V V 27. In adevice for the purpose set forth, the combination of a bag-diaphragmadapted to be introduced into a pipe through a tap hole therein, ahollow member connected -with, an opening into, said bag-diaphragm andadapted to be secured in the taphole, and means for forcing saiddiaphragm into engagement with the inner surface of the pipe formed of amember adapted to enter said bag-diaphragm through said firstreferred-tomember, a plurality ofeurved memberseach flexibly connected at one endwith the inner end of said secondreferred-to member with their curvedportions, for oper atively engaging said diaphragm, extendin outwardlyin opposite directions from the member carrying them, and links pivotedto said last-referred-to member and flexibly connected with the otherends-of said curved members.

28. A structure for the purpose set forth, comprising a member, aplurality of curved members each flexibly connected at one end with theinner end of said member, with their curved portions, for operativelyengaging a diaphragm, in opposite directions and links pivoted to saidmember and flexibly connected with the other ends of said curvedmembers. I t v 29. A structure for the purpose set forth, comprising amember, a plurality of curved members each flexibly connected at one endwith the inner end of said member withtheir curved portions, foroperatively engaging a diaphragm, extending outwardly in oppositedirections from said member, and links extending outwardly oppositedirections from said member,

having sliding pivoted connection with said member and flexiblyconnected with the other ends of said curved members.

comprising a member, a plurality of curved w1th their curved'portions,for operatively engaging a diaphragm, extending outwardly in oppositedirections from said member, and links pivoted to said member andflexibly connected with the other ends of said curved members.

31. A structure for the purpose set forth, comprising a member, aplurality of curved members pivotally connected at one end with theinner end of said member with their curved portions, for

33. A structure for the purpose set forth presenting curved, relativelymovable portions for engaging a diaphragm, said portions extending indisconnected intersecting relation, and means for moving said portionsoutwardly in opposite directions.

34.,A structure for the purpose set forth presenting curved, relativelymovable portions for engaging a diaphragm, said portions extending indisconnected intersecting relation, and means engaging said portions atthe side of said point-of intersection opposite that at phragm. I 7

,7 35.; A structure for the purpose set forth presenting curved,relatively movable, porwhich they engage the diations for engaging adiaphragm, thelower ends of said portions being flexibly connectedtogether and their upper portions ex-- tending in disconnected,intersecting, relation, and means for moving said portions outwardlyinopposite directions.

36. A structure for the purpose set forth presenting curved, relativelymovable, portions for engaging a diaphragm, the lower ends of saidnected together and their upper portions extending in disconnected,intersecting, relation, andemeans engaging said portions at operativelyengaging a diaphragm, extending outwardly in opposite directions fromsaid member, and links,

to said member and pivotally con-- the purpose set forth,-

portions being flexibly con-- the side of said point of intersectionopposite that at which they engage the diaphragm. a

37. A structure for the purpose set forth, comprising a member, aplurality of curved members each flexibly connected at one end with'theinner end of said member, with their curved portions,'for operatively'engaging adiaphragm, extending'outwardly in opposite directions fromsaidmember, said curved members extending in intersected relation, and meansfor shifting said curved membersoutwardly in opposite directions. p j

38. A structure for the purpose set forth, comprising, in combination, abag-dim phragm adapted to be inserted into a pipe a member" through atap-hole therein, adapted to be introduced into said bag-diaphragm, aplurality of curved members flexibly tions extending into said,diaphragm, for

7 comprising,

forcing the latter 1nto tight-joint-forming condition relative to theinner wall of a pipe, extending outwardly in opposite directions from,said member, said curved members extending beyond their pivotalconnection extending outwardly in opposite'directions ibly connectedconnected at one end with the inner end of said member Iwiththeir'curved porfor the purpose set forth,

a "bag-dia-V frames for forcing ferred-to frame; condition relative tothe inner wall of a pipe, 1

from said member, said curved members extending beyond their pivotalconnection with said member, in intersecting relation,

and links pivoted tosaid member and flexwith the other ends of saidcurved members.

40. A device for the purpose set forth, comprising, 7 in combination, abag-diaphragm adapted to be inserted into a pipe through a tapholetherein and containing an opening, a threaded hollow member connectedwith said bag-diaphragm at the opento screw into the ing therein andadapted tap-hole, a frame connected with and extending outwardly fromsaid hollow memher, a second frame containing a longitudinally slottedportion,

the lower end frame with their curved portions at which they extend intosaid bag-diaphragm, ex tending outwardly in opposite directions fromsaid last-referred-to frame, links pivotally connected with the otherends of said curved members, a pivot device in the slotted portion ofsaid frame and movable lengthwise of the latter forming apivotalconnection of said links at their other ends therewith, said curvedportions extending in v curved members pivotally connected at theirlower ends with 1 of the second-referred-to V intersected relation withthe connections between said links and said curved portions being at theside of said point of intersec tion opposite that, at which said curvedportions are pivotally' connected with said sec ond-referred-to member,means cooperatlng with said links for drawing them together to move saidcurved portions away from each other, and means cooperating with saidsaid second-referred-to frame inwardly relative to said first-re-MICHAEL rRovIo'HQ

